trifluoroacetic acid in dimethyl sulfoxide T=60°C; 7 h;
参考文献
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), , vol. 38, # 6.2 p. 1240 - 1243
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, , # 6 p. 1358 - 1361